# A103768 (b-file synthesized from sequence entry)
0 0
1 0
2 6
3 46
4 228
5 930
6 3406
7 11682
8 38412
9 122806
10 385182
11 1192254
12 3656452
13 11141178
14 33791934
15 102161962
16 308156748
17 928008846
18 2791497262
19 8390220006
20 25203689700
21 75680274610
22 227185526766
23 681858569586
24 2046204853708